1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba482820678bbcb341b7e99f8ab3494d68787375ce6ded78b5bbf6cb613dd7a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5bf1a98-0bd6-4264-afd2-cd34a0233c65.json and https://artists.proofprofile.net/proofs/artist/a5bf1a98-0bd6-4264-afd2-cd34a0233c65.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ennia Pliromena Tragoudia (Nine Paid Songs)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e71d73b7e5150594fbc587fa4ab264b04579490d2f1b2e74ca9f888d358d3f6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRMU11300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe788fc922c5a21f3285c14d614b95b6c4d6c6aa7075eb05b1f0b21193686ca07. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRMU11300096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9378376361e5f9d8bf8779c09f958a99c1a6ebcb84bb79109a547f2608240930. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRMU11300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478c09cfbbd7f25e85214265e25cb0be78eeb9bdf3229b6110358ec208310ed2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRMU11300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e2d828d19ef2ce0b454d30eeede6dad106fbc6a657d551ae923f2021d36a3d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRMU11300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a40e3b47fa18b588c1895bf22f60756ecfd7da4253d79744cc0b1a6f1a027d8. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRMU11300104.
Parti Ston 13o Orofo / Tripes Ston Paradiso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746577a12d454449bc47ad1ddacb16501323a69225909208a306569fe577c20f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRV019100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9911194f55e3b7ad6bf2439e0fe7b782a3622aab7dbe13dd4d1dec151bd6e82c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRV019100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1838c0a8148f4e46da5d45c2dcf6d35be019d652e70bef9e03c71ed284e4b3c2. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRV019100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7c3d2ec5725ded0c97ce441ac824490f9c768ab8b27bc2cd09018927496222. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRV019100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27c53797c751f445e7ed6eece290355476ac40580f62ea5028a073656bf85e9. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRV019100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a0039793a31498f71a71ff8adae56b4ba7fb321ae7eebab4a38282bec0d7ec. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRV019400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c259e9d6576d2e1481f6cba8c739866fdc986bc1b61fcc2789dab0d3bb0cda. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRV019600032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f7331dd3b474ded591d8910bd20c5c7c5d40dd238d2f16f2e3ded8cf3973b8. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRV019600033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e64b8299e0c5570c71ef487560ec962d4e16ee531861e1a882a29a06bb82c9. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRV019600035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7b5b0bab82bf3e0b37cc5e1f9998322f05a5b8ad405775648f93750a11e254. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRV019600037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaac18941a6fd1e2856d742807637d790e4fef0eef4b75e696ca1e22c54fc345. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRUM71800458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0f5c3a2ce576be5cd8fdd086bff180fe7a0b6658d5c4c845b8a4f58a77907d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRV019900058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44e14bb5be4f39f7c6f53f8f1fb90d18258fb15b87c09ced613f745e6f9e7fb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRV019900060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7d84fb46e88509c45fddad23d721e6cac6ae2929a076dc550dbe1c20d4aefd. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRV019900063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574fdcb74ccd5f3df776975bcb4745535560f06731bbae25c0a464b53e808d46. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRV019900065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c327559dc68605566ba60b095aac74eb0c176d610d7712df8faf7030fc5a555. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRV019900066.
Ena Taxidi Pou Pote Den Telioni 1985 - 2000
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e8482b9e1ec3086e165b4852de7ee6591c1214915e54b2318ed926f3d66ff4. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRV019600036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746577a12d454449bc47ad1ddacb16501323a69225909208a306569fe577c20f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRV019100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704dd68e11f7a3fa7d2ed4f7cef3e51125803c28404c73f7ed2c15942f8e812e. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRV019400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896df4b1662caf05e3b86f28de49d33f72f31046acf9065c8f22cde402886fc0. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRV019100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e49ea121e4409511a5bda88dcae69a38d3936c069460c5ebd14370b446b4e3e. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRV019300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38c65cedbd603ed959f9517645406198cc288f2ec916b348b5fd8b6644e60d0. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRV019300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574dc10f87d3feca87459800f725634fb6d8e6a6fd1da9da75712cfa7aef09fb. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRV019100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c7b99dfbb46b59296fb150d5928cb482f5917de8cb9d6dedd0ff521b48327d. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRV019300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c89ab4e61cae39c207869ac75a30d8d4cb6984762722b3d3feb7e3d219bc94. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRV019400006.